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The archaeopteryx shows characteristics of both birds and reptiles. It is probably the ancestor of birds.
Extinct proboscidea closely related to today's elephants, often hunted by prehistoric man.
Smoking severely damages the respiratory system, it may cause COPD or lung cancer.
Penguins are birds living in the Antarctic and adapted to cold temperature and swimming.
This animation demonstrates the anatomy of tulips, daffodils and snowdrops.
A species of venomous snakes widespread in Europe. Its bite is rarely fatal to humans.
Dicotyledons have two embryonic leaves (cotyledons), while monototyledons have only one.
Enzymes are protein molecules catalysing biochemical reactions. Their activity can be regulated.
The animation demonstrates the most important types of feathers and their fine structure.
Geckos can walk on walls or even ceilings. The 3D scene explains this ability.
Larvae of this type of mayflies spend the first three years of their lives in water, their adult lives last for only one day which they use for mating.
The hypothalamic-pituitary axis is the regulating centre of our endocrine system.
An important endocrine gland producing hormones that affect metabolism and the calcium balance of the body.
During the evolution of vertebrates the relative development of brain areas has changed.
Pearls, often used as gemstones, are the by-products of certain molluscs' protective mechanisms.
The limbic system plays an important role in forming emotions and in learning.
With the example of the stag beetle we demonstrate how insects' muscles function, how insects fly and how they reproduce.
The cause of a heart attack is the blockage of a coronary artery. It is one the most common causes of death.